Home / 83,420.26-125,130.40-21,090.76

Finding the Fourth Proportional to 83,420.26, 125,130.40 and 21,090.76

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Solution

The fourth proportional to 83,420.26, 125,130.40 and 21,090.76 is: 31,636.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,420.26 : 125,130.40 = 21,090.76 : x
  2. Step 2: Convert to fraction form
    83,420.26/125,130.40 = 21,090.76/x
  3. Step 3: Cross multiply
    83,420.26x = 125,130.40 × 21,090.76
  4. Step 4: Simplify right side
    83,420.26x = 2,639,095,235.10
  5. Step 5: Solve for x
    x = 2,639,095,235.10/83,420.26
  6. Step 6: Final answer
    x = 31,636.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.